The issues are:

• Process name value is always DefaultProcess
• The generated id is the same one as the name given by the new process popup, which can contain invalid characters
• Process data variable names seem to be candidate to contain invalid characters - for example, it does not allow white-spaces but allows dots, which is not a valid identifier

Expected:

• Process name value set as the name given by the new process popup
• The id property and variable names (process data) should be transformed into a valid value, so probably removing white-spaces, etc from the input value